Mercurial > sdl-ios-xcode

comparison src/video/SDL_renderer_gl.c @ 2836:b128b94ed31e

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Rebind the context to the window area and update matrices when the window size changes
author Sam Lantinga <slouken@libsdl.org>
date Sat, 06 Dec 2008 05:23:35 +0000
parents f38257b5d936
children f89700cc9272
comparison
equal deleted inserted replaced
2835:f38257b5d936 2836:b128b94ed31e
421 421
422 if (SDL_GL_MakeCurrent(window->id, data->context) < 0) { 422 if (SDL_GL_MakeCurrent(window->id, data->context) < 0) {
423 return -1; 423 return -1;
424 } 424 }
425 if (data->updateSize) { 425 if (data->updateSize) {
426 GL_DisplayModeChanged(renderer); 426 data->glMatrixMode(GL_PROJECTION);
427 data->glLoadIdentity();
428 data->glMatrixMode(GL_MODELVIEW);
429 data->glLoadIdentity();
430 data->glViewport(0, 0, window->w, window->h);
431 data->glOrtho(0.0, (GLdouble) window->w, (GLdouble) window->h, 0.0,
432 0.0, 1.0);
427 data->updateSize = SDL_FALSE; 433 data->updateSize = SDL_FALSE;
428 } 434 }
429 return 0; 435 return 0;
430 } 436 }
431 437
432 static int 438 static int
433 GL_DisplayModeChanged(SDL_Renderer * renderer) 439 GL_DisplayModeChanged(SDL_Renderer * renderer)
434 { 440 {
435 GL_RenderData *data = (GL_RenderData *) renderer->driverdata; 441 GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
436 SDL_Window *window = SDL_GetWindowFromID(renderer->window); 442
437 443 /* Rebind the context to the window area and update matrices */
438 data->glMatrixMode(GL_PROJECTION); 444 data->updateSize = SDL_TRUE;
439 data->glLoadIdentity(); 445 return GL_ActivateRenderer(renderer);
440 data->glMatrixMode(GL_MODELVIEW);
441 data->glLoadIdentity();
442 data->glViewport(0, 0, window->w, window->h);
443 data->glOrtho(0.0, (GLdouble) window->w, (GLdouble) window->h, 0.0, 0.0,
444 1.0);
445 return 0;
446 } 446 }
447 447
448 static __inline__ int 448 static __inline__ int
449 power_of_2(int input) 449 power_of_2(int input)
450 { 450 {